Confidence: Medium · Source: FCC ULS · As of 2026-09-14
W7DWJ callsign genealogy
Currently held by Jacobson, Don W
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W7DWJ's current licensee, walking backwards.
- Jacobson, Don WUTgranted 2018-06-05cancelled 2019-04-02
Successor callsigns
Callsigns held now by people who previously held W7DWJ.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W7DWJ, oldest first.
- HORSTMAN, GILBERT R WA1993-03-16 → cancelled 2005-03-17
- Jacobson, Don W UT2019-04-02 active